優しい夫と可愛い息子、平凡ながらも穏やかな日々を送る彩春。しかし、夫婦はいつしか‘家族’となり、女として見られることはなくなっていた。そんな折、届いた同窓会の知らせ。彩春は●校時代に想いを寄せていた恩師・木田と20年ぶりに再会する。伝えることもなく終わった初恋、だけど忘れられなかった眼差し。少し老けたけれど、あの頃と変わらぬ恩師を前に再び動き出した時間…。教師と生徒ではなくなったふたりは、抗えない想いに流されていく。

Ayaharu lives a peaceful, albeit ordinary, life with her kind husband and adorable son. However, the couple has become more than just 'family,' and she is no longer seen as a woman. Then, she receives news of a class reunion. Ayaharu reunites with her former teacher, Kida, whom she had a crush on during her high school days, after 20 years. Her first love ended without her ever confessing it, but she could never forget his gaze. Though he has aged a little, her teacher is the same as he was back then, and time begins to move again in front of her… No longer teacher and student, the two are swept away by irresistible feelings.